Rules

1) No posts complaining about Reddit. Posts should apply to the outside world. Mod announcements, constructive criticisms and suggestions for improvements to /r/britishproblems must be tagged with [meta].

2) Problems must apply specifically to Brits and be British in nature. If your post could apply equally to someone from another country, or is about another country, it most likely isn't a British problem and would be better suited to /r/firstworldproblems instead.

3) Submission titles must contain the entire problem. Background information may be included within the self text. Don't just list something, explain why it's a problem.

4) No politics. Post to /r/ukpolitics instead. Problems involving politicians but not politics are fine.

5) No slurs or harassment. Extreme or repeat offenders are banned. However, if you feel you've been banned by mistake, please message the mods.

Perhaps there is space for a 'sarcasm' app. It would alert your foreign conversational partner that you are using sarcasm, perhaps via voice recognition, and translate it into a polite, but firm, phrase they would understand?

Only partially correct about the sarcasm bit I'm afraid. We still use sarcasm, just in a different manner. Americans tend to say things less dryly when they're being sarcastic. Almost everyone I know uses sarcasm to a degree, they just tend to say sarcastic things with a lot more emphasis and a different tone than a Brit would use, so the sarcasm is more obvious. (cue dumb American joke)

I tend to have the opposite problem though, I'm so dry and monotone in my sarcasm that often times people think I'm serious and that I'm simply just an asshole. Sometimes even my closest friends don't realize I'm joking. :/
My sense of humor would probably fit in better in Britain honestly.

Source: I'm an American (Florida) who likes Britain and would possibly like to live there one day.